#4efff9
a light, electric cyan · cool · closest name: cyan
RGB
78, 255, 249
HSL
178°, 100%, 65%
CMYK
69, 0, 2, 0
Luminance
0.7998
Every format
| HEX | #4efff9 |
| RGB | rgb(78, 255, 249) |
| HSL | hsl(178, 100%, 65%) |
| CMYK | cmyk(69%, 0%, 2%, 0%) |
| LAB | lab(91.7 -45.0 -10.1) |
| LCH | lch(91.7 46.1 192.7) |
| OKLCH | oklch(0.911 0.140 191.6) |
Copy-ready code
/* CSS */
color: #4efff9;
background-color: #4efff9;
/* Tailwind (arbitrary) */
class="text-[#4efff9] bg-[#4efff9]"
/* SCSS */
$brand: #4efff9;
/* SwiftUI */
Color(red: 0.306, green: 1.000, blue: 0.976)
/* Android */
Color.parseColor("#4efff9")Accessibility — WCAG contrast
Aa
#4efff9 on white: 1.24:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#4efff9 on black: 17.00:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red30.6%
Green100.0%
Blue97.6%
CMYK percentages
Cyan69.4%
Magenta0.0%
Yellow2.4%
Key (black)0.0%
Color previews
#4efff9 text on a black background
contrast 17.00:1
Card sample
#4efff9 text on a white background
contrast 1.24:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #4efff9;
Background color
Panel with #4efff9 background
background-color: #4efff9;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #4efff9;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(78, 255, 249, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(78, 255, 249, 0.45);
Border & gradient
Gradient panel
border: 3px solid #4efff9; background: linear-gradient(135deg, #4efff9, #4E8FFF);